I can't connect to the map because server connection is closed.The game server abruptly disconnected the connection. Refresh the page to attempt to reconnectIs this because of my location or because of my laptop?

The new map engine is very temperamental. At present, it'd be better to use the old map engine. To access the old maps, go to Trainer HQ > Pokedex. search up Pikachu from the drop down menu. scroll to the bottom of Pikachu's Pokedex page, click Hollowbrook Hown. This will take you to the start of the old map system. From there, you can access 30+ maps. In order to switch between them, (once visited for the first time), click the "View Other Maps" button. If you unlock any Gym Leader maps or buy any Elemental maps, they will also appear here. Please note you'll have to go to the Pokedex page every time, unfortunately.